Triangle Sum Theorem

Front

What does the Triangle Sum Theorem state?

Back

The Triangle Sum Theorem states that the sum of all angles in a triangle is 180°.

Front

If one angle of a triangle measures 30° and another measures 110°, what is the measure of the third angle?

Back

The third angle measures 40°.

Front

In a triangle, if one angle measures 90°, what can you say about the other two angles?

Back

The other two angles must sum to 90°.

Front

What is the measure of the missing angle if two angles in a triangle measure 50° and 60°?

Back

The missing angle measures 70°.

Front

If a triangle has angles measuring 45° and 45°, what is the measure of the third angle?

Back

The third angle measures 90°.

Front

How do you find the measure of a missing angle in a triangle?

Back

Subtract the sum of the known angles from 180°.

Front

What is the sum of the angles in any triangle?

Back

The sum of the angles in any triangle is 180°.

Front

If a triangle has angles measuring 30°, 60°, and x°, what is the value of x?

Back

x = 90°.

Front

What is the measure of the missing angle if one angle is 70° and another is 40°?

Back

The missing angle measures 70°.

Front

In a triangle, if one angle measures 120°, what is the maximum possible measure of the other two angles?

Back

Each of the other two angles must be less than 60°.